In　order　to　study　the　efficiency　and　mechanism　of　the　vibration　control　of　particle　dampers　in　long-period　bridge　structures,　a　1/20-scale　bridge　model　was　designed　according　to　a　typical　asymmetric　self-anchored　suspension　bridge　with　a　single-tower,　and　a　multilayer　compartmentalparticle　damper　applied　to　the　scaled　test　model　was　proposed.　Corresponding　shaking　table　tests　of　the　scaled　model　with　and　without　particle　dampers　were　conducted.　The　experimental　results　show　that　the　multilayer　particle　damper　proposed　does　not　show　the　phenomenon　of　particle　accumulation　in　the　experiments,　and　it　has　a　good　damping　effect　on　the　longitudinal　seismic　responses　of　the　main　beam　of　the　scaled　model　bridge.　It　can　dramatically　reduce　the　displacement　responses　and　acceleration　root　mean　square　responses　of　the　main　beam.　This　type　of　damper　can　significantly　increase　the　equivalent　damping　ratio　to　reduce　the　longitudinal　vibration　of　the　main　beam　(in　the　low　frequency　vibration　direction),　and　its　has　a　significant　tuning　effect　on　the　fundamental　longitudinal　vibration　frequency　of　the　main　beam;　The　multilayer　compartmental　particle　damper　can　effectively　control　the　low-frequency　dynamic　responses　of　long-period　bridges　and　can　be　applied　to　the　seismic　control　of　long-period　engineering　structures.　©　2018,　Editorial　Office　of　Journal　of　Vibration　and　Shock.　All　right　reserved.